| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a microcapsule for pressure-sensitive copy sheets using straight chain alkylbenzene as a solvent for dissolving an electron-donating color-developing agent equipped with an adequate color-developing property, its manufacturing method and a pressure-sensitive recording material obtained using the method and the microcapsule. <P>SOLUTION: The microcapsule for pressure-sensitive copy sheets contains a color-developing solution formed by dissolving an electron-donating color-developing agent in straight chain alkylbenzene represented by a formula C<SB>6</SB>H<SB>5</SB>C<SB>n</SB>H<SB>2n+1</SB>(n=9-14) wherein the diaphragm is formed of a polyurea film having an allophanate group. After the electron-donating color-developing agent dissolved in a mixture of polyisocyanate having the straight chain alkylbenzene and the allophanate group is emulsified and dispersed in an aqueous solution containing a polyvinyl alcohol dispersing agent, a polyurea film is formed in the emulsified particulate interface by undergoing a polymerization reaction with the addition of polyamine. The pressure-sensitive recording material is formed of the microcapsule and the electron-donating developer. <P>COPYRIGHT: (C)2007,JPO&INPIT |
